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    <h1>word-spacing</h1>
    <div style="word-spacing: normal;">
        <h3> word-spacing: normal —— 默认。定义单词间的标准空间</h3>
        This is some text. This is some text.           This is some text.
        This is some text. This is some text.           This is some text.
        This is some text. This is some text.           This is some text.
        This is some text. This is some text.           This is some text.
        This is some text. This is some text.           This is some text.
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    <div style="word-spacing: length;">
        <h3> word-spacing: length —— 定义单词间的固定空间</h3>
        This is some text. This is some text.           This is some text.
        This is some text. This is some text.           This is some text.
        This is some text. This is some text.           This is some text.
        This is some text. This is some text.           This is some text.
        This is some text. This is some text.           This is some text.
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